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中文摘要：
根据超声探头的声场特性，设计制作了一种准全向超声收发装置。该装置主要通过对13个TC40—16TR超声探头组成的三维阵列的结构设计，再辅以多通道同步发射、多通道枪答接收电路，实现准全向测距，为实现对近地面的飞行行目标的定位提供了方便可行的测距装置解决方案。实验结果表明，该装置能够实现对半径为15m的半球空间的可靠拿向测距，测距标准筹存5mm以内。
英文摘要：
According to the sound field eharacteristic, s of uhrasonic prohes, a quasi-omnidirectional ultrasonic trans- ceiver is designed based on theoretical analysis and experimenlal test. We integrate thirteen TC40-16TR ultrasonic probes to fi）rm a 3-dimentional array, and design the electric circuit for multi-channel synchronous emitting and muhi- channel receiving to answer the first. The device achieves quasi-omnidirectional emitting and receiving, which pro- vides a solution of the ranging devices for positioning the flying targets close to the ground. Experiment results demon- strate that this device can measure the distance in omnidireetion reliably in the range of a hemisphere with radius of 15 meters,and the standard deviation is within 5 rain.
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